Company lists · Data refreshed November 2026
Top 25 Gemological laboratories based in the United Kingdom
RevenueBase identified 112 company matches for gemological laboratories associated with the United Kingdom as of November 2026 and tracks 941 professional contacts across them, including 295 with verified work emails. London is the largest hub.
This list covers company matches for gemological laboratories associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest gemological laboratories based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 66 contacts → | ||||
Exact match “The Birmingham Assay Office was founded in 1773 to provide Assaying (testing) and Hallmarking of precious metal items (Gold, Silver, Platinum and Palladium) as required by the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 52 contacts → | ||||
Exact match “United by a shared belief that responsible business is good business, we work together with our members and partners to create a globally sustainable future for our industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 51 contacts → | ||||
Exact match “Creating and supporting gemmologists since 1908.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 44 contacts → | ||||
Exact match “A centre for glass research and development Glass Technology Services Ltd (GTS) is an independent glass laboratory and consultancy, accredited to ISO 9001 and ISO/IEC 17025…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 36 contacts → | ||||
Exact match “Sheffield Assay Office is one of only four offices in the country that tests (assays) and hallmarks precious metals.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 35 contacts → | ||||
Exact match “Geotek specialises in high-resolution, non-destructive analysis of geological cores through the use of our Multi-Sensor Core Logger (MSCL) platforms.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 32 contacts → | ||||
Exact match “The Goldsmiths' Company Assay Office is where hallmarking began over 700 years ago.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 28 contacts → | ||||
Exact match “For over 30 years, Henig Diamonds has been at the heart of the UK diamond trade, proudly supplying jewellers, wholesalers, and retailers across Europe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 23 contacts → | ||||
Exact match “Petrolab has been operating for over 30 years and are specialists in the mineralogical investigation of rocks, mineral resources and manufactured inorganic materials by…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 20 contacts → | ||||
Exact match “Rudell the Jewellers is renowned as a jeweller of excellence and with the finest customer care in the Midlands, UK, boasting the most prestigious selection of jewellery…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 19 contacts → | ||||
Exact match “Mireya UK Ltd prides itself in offering integrated business solutions for diamond & diamond jewellery retailers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 18 contacts → | ||||
Exact match “Protecting consumers, assuring quality, and building trust.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 17 contacts → | ||||
Exact match “Kimai is a fine jewelry brand creating delicate designs using only lab-grown diamonds & 18k recycled gold.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 8 contacts → | ||||
Exact match “Origin Analytical has been established to provide research grade analytical data to industry in a cost effective manner with turn around times to suit the demands of modern…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 7 contacts → | ||||
Exact match “Our aim is to bring gemmology to you.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 4 contacts → | ||||
Exact match “The World Diamond Museum is an international organization established to research, educate, and promote diamonds.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 3 contacts → | ||||
Exact match “Monnickendam Diamonds is one of the oldest and largest sellers of loose and certified diamonds in the UK.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 3 contacts → | ||||
Exact match “Sunshine Exim was established in 1989.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 3 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 3 contacts → | ||||
Exact match “The Diamond Trust offers a variety of diamond jewellery beyond that which you will see in most stores.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 3 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 2 contacts → | ||||
Exact match “Agroisolab UK have been experts in the use of isotope analysis for provenance testing, counter-fraud and authentication of organic produce at the commercial level for over a…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 2 contacts → | ||||
Exact match “Susan Rumfitt is a well respected and knowledgeable specialist and lecturer on the history of jewellery and has been one of the specialists on the BBC's Antiques Roadshow for over…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 2 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 2 contacts → | ||||
Exact match “Merlin Lazer first established itself as a world leader in the field of Glass measurement and identification, however as part of our continual expansion and in response to our…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “gemological laboratories”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 112 gemological laboratories based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 295 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Gemological laboratories based in the United Kingdom at a glance
As of Nov 6, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 112 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United Kingdom whose business descriptions match “gemological laboratories” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 295 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Gemological laboratories by metro
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “gemological laboratories”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many gemological laboratories are there based in the United Kingdom?
RevenueBase identified 112 company matches for gemological laboratories associated with the United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Birmingham Assay Office tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most gemological laboratories?
London leads with 58 company records, followed by Birmingham (5) and Bristol (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 295 professional contacts with verified work emails tracked across these 112 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 112 gemological laboratories based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Gemological laboratories by geography
- Gemological laboratories based in Paris, France
- Gemological laboratories based in Mumbai, India
- Gemological laboratories based in Surat, India
- Gemological laboratories based in London, United Kingdom
- Gemological laboratories based in Los Angeles, United States
- Gemological laboratories based in New York, United States
- Gemological laboratories based in Australia
- Gemological laboratories based in Belgium
- Gemological laboratories based in Brazil
- Gemological laboratories based in Canada
- Gemological laboratories based in France
- Gemological laboratories based in Germany
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Gemological laboratories based in Paris, France
- Gemological laboratories based in Mumbai, India
- Gemological laboratories based in Surat, India
- Gemological laboratories based in London, United Kingdom
- Gemological laboratories based in Los Angeles, United States
- Gemological laboratories based in New York, United States
Company intelligence · public preview
Top 25 gemological laboratories based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 112 matching company records for gemological laboratories based in the United Kingdom, with 941 tracked contacts and 295 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 gemological laboratories based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Birmingham Assay Officetheassayoffice.comHQ: Birmingham, United KingdomReported employees: 51-200 | Birmingham, United Kingdom | 51-200 | Exact match | 66 contacts → |
“The Birmingham Assay Office was founded in 1773 to provide Assaying (testing) and Hallmarking of precious metal items (Gold, Silver, Platinum and Palladium) as required by the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Responsible Jewellery Councilresponsiblejewellery.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 52 contacts → |
“United by a shared belief that responsible business is good business, we work together with our members and partners to create a globally sustainable future for our industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Gem-Agem-a.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 51 contacts → |
“Creating and supporting gemmologists since 1908.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Glass Technology Servicesglass-ts.comHQ: Sheffield, United KingdomReported employees: 11-50 | Sheffield, United Kingdom | 11-50 | Exact match | 44 contacts → |
“A centre for glass research and development Glass Technology Services Ltd (GTS) is an independent glass laboratory and consultancy, accredited to ISO 9001 and ISO/IEC 17025…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Sheffield Assay Officeassayoffice.co.ukHQ: Sheffield, United KingdomReported employees: 51-200 | Sheffield, United Kingdom | 51-200 | Exact match | 36 contacts → |
“Sheffield Assay Office is one of only four offices in the country that tests (assays) and hallmarks precious metals.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Geotek Limitedgeotek.co.ukHQ: Daventry, United KingdomReported employees: 11-50 | Daventry, United Kingdom | 11-50 | Exact match | 35 contacts → |
“Geotek specialises in high-resolution, non-destructive analysis of geological cores through the use of our Multi-Sensor Core Logger (MSCL) platforms.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  London Assay Officeassayofficelondon.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 32 contacts → |
“The Goldsmiths' Company Assay Office is where hallmarking began over 700 years ago.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Henig Diamondshenigdiamonds.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 28 contacts → |
“For over 30 years, Henig Diamonds has been at the heart of the UK diamond trade, proudly supplying jewellers, wholesalers, and retailers across Europe.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Petrolab Limitedpetrolab.co.ukHQ: Redruth, United KingdomReported employees: 11-50 | Redruth, United Kingdom | 11-50 | Exact match | 23 contacts → |
“Petrolab has been operating for over 30 years and are specialists in the mineralogical investigation of rocks, mineral resources and manufactured inorganic materials by…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Rudell The Jewellersrudells.comHQ: Wolverhampton, United KingdomReported employees: 11-50 | Wolverhampton, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Rudell the Jewellers is renowned as a jeweller of excellence and with the finest customer care in the Midlands, UK, boasting the most prestigious selection of jewellery…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Mireyamireyauk.comHQ: Clerkenwell, United KingdomReported employees: 11-50 | Clerkenwell, United Kingdom | 11-50 | Exact match | 19 contacts → |
“Mireya UK Ltd prides itself in offering integrated business solutions for diamond & diamond jewellery retailers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Edinburgh Assay Officeedinburghassayoffice.co.ukHQ: Edinburgh, United KingdomReported employees: 11-50 | Edinburgh, United Kingdom | 11-50 | Exact match | 18 contacts → |
“Protecting consumers, assuring quality, and building trust.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  KIMAIkimai.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 17 contacts → |
“Kimai is a fine jewelry brand creating delicate designs using only lab-grown diamonds & 18k recycled gold.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Origin Analyticaloriginanalytical.comHQ: Welshpool, United KingdomReported employees: 11-50 | Welshpool, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Origin Analytical has been established to provide research grade analytical data to industry in a cost effective manner with turn around times to suit the demands of modern…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Gemmology Rocksgemmologyrocks.comHQ: Maidstone, United KingdomReported employees: 1-10 | Maidstone, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Our aim is to bring gemmology to you.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  The World Diamond Museumfacetsofmankind.orgHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“The World Diamond Museum is an international organization established to research, educate, and promote diamonds.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Monnickendam Diamondsmonnickendam.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Monnickendam Diamonds is one of the oldest and largest sellers of loose and certified diamonds in the UK.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Sunshine Exim LTDsunshineexim.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Sunshine Exim was established in 1989.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  247 Diamonds Limitedcomparethediamond.comHQ: Salford Priors, United KingdomReported employees: 1-10 | Salford Priors, United Kingdom | 1-10 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 |  The Diamond Trustthediamondtrust.co.ukHQ: Berkhamsted, United KingdomReported employees: 11-50 | Berkhamsted, United Kingdom | 11-50 | Exact match | 3 contacts → |
“The Diamond Trust offers a variety of diamond jewellery beyond that which you will see in most stores.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Sant Enterprises Limitedsantenterprises.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 |  Agroisolab UKagroisolabs.comHQ: Malton, United KingdomReported employees: 1-10 | Malton, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Agroisolab UK have been experts in the use of isotope analysis for provenance testing, counter-fraud and authentication of organic produce at the commercial level for over a…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Susan Rumfitt Fine Jewellerysusanrumfitt.com HQ: Harrogate, United KingdomReported employees: 1-10 | Harrogate, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Susan Rumfitt is a well respected and knowledgeable specialist and lecturer on the history of jewellery and has been one of the specialists on the BBC's Antiques Roadshow for over…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Marcus Mccallum Limitedmarcusmccallum.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 |  Merlin Lazer LTDmerlinlazer.comHQ: Royal Tunbridge Wells, United KingdomReported employees: 1-10 | Royal Tunbridge Wells, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Merlin Lazer first established itself as a world leader in the field of Glass measurement and identification, however as part of our continual expansion and in response to our…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 112 company matches
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Gemological laboratories: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
105 records in the displayed employee bands.
7 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 112 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Gemological laboratories by metro
Questions about this company list
What does Exact match mean for gemological laboratories?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many gemological laboratories did RevenueBase find based in the United Kingdom?
The saved snapshot records 112 matching company records, 941 tracked contacts and 295 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Gemological laboratories by geography
- Gemological laboratories based in Paris, France
- Gemological laboratories based in Mumbai, India
- Gemological laboratories based in Surat, India
- Gemological laboratories based in London, United Kingdom
- Gemological laboratories based in Los Angeles, United States
- Gemological laboratories based in New York, United States
- Gemological laboratories based in Australia
- Gemological laboratories based in Belgium
- Gemological laboratories based in Brazil
- Gemological laboratories based in Canada
- Gemological laboratories based in France
- Gemological laboratories based in Germany
Cite this list
RevenueBase Data Team. Top 25 gemological laboratories based in the United Kingdom. Snapshot: November 6, 2026. https://revenuebase.ai/companies/gemological-laboratories/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Gemological laboratories based in Paris, France
- Gemological laboratories based in Mumbai, India
- Gemological laboratories based in Surat, India
- Gemological laboratories based in London, United Kingdom
- Gemological laboratories based in Los Angeles, United States
- Gemological laboratories based in New York, United States
Company intelligence · public preview
Top 25 gemological laboratories based in the United Kingdom
RevenueBase records 112 matching company records for gemological laboratories based in the United Kingdom, with 941 tracked contacts and 295 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 gemological laboratories based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Birmingham Assay Officetheassayoffice.com HQ: Birmingham, United KingdomReported employees: 51-200 | Birmingham, United Kingdom | 51-200 | Exact match | 66 contacts → |
“The Birmingham Assay Office was founded in 1773 to provide Assaying (testing) and Hallmarking of precious metal items (Gold, Silver, Platinum and Palladium) as required by the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Responsible Jewellery Councilresponsiblejewellery.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 52 contacts → |
“United by a shared belief that responsible business is good business, we work together with our members and partners to create a globally sustainable future for our industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Gem-Agem-a.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 51 contacts → |
“Creating and supporting gemmologists since 1908.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Glass Technology Servicesglass-ts.com HQ: Sheffield, United KingdomReported employees: 11-50 | Sheffield, United Kingdom | 11-50 | Exact match | 44 contacts → |
“A centre for glass research and development Glass Technology Services Ltd (GTS) is an independent glass laboratory and consultancy, accredited to ISO 9001 and ISO/IEC 17025…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Sheffield Assay Officeassayoffice.co.uk HQ: Sheffield, United KingdomReported employees: 51-200 | Sheffield, United Kingdom | 51-200 | Exact match | 36 contacts → |
“Sheffield Assay Office is one of only four offices in the country that tests (assays) and hallmarks precious metals.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Geotek Limitedgeotek.co.uk HQ: Daventry, United KingdomReported employees: 11-50 | Daventry, United Kingdom | 11-50 | Exact match | 35 contacts → |
“Geotek specialises in high-resolution, non-destructive analysis of geological cores through the use of our Multi-Sensor Core Logger (MSCL) platforms.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | London Assay Officeassayofficelondon.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 32 contacts → |
“The Goldsmiths' Company Assay Office is where hallmarking began over 700 years ago.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Henig Diamondshenigdiamonds.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 28 contacts → |
“For over 30 years, Henig Diamonds has been at the heart of the UK diamond trade, proudly supplying jewellers, wholesalers, and retailers across Europe.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Petrolab Limitedpetrolab.co.uk HQ: Redruth, United KingdomReported employees: 11-50 | Redruth, United Kingdom | 11-50 | Exact match | 23 contacts → |
“Petrolab has been operating for over 30 years and are specialists in the mineralogical investigation of rocks, mineral resources and manufactured inorganic materials by…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Rudell The Jewellersrudells.com HQ: Wolverhampton, United KingdomReported employees: 11-50 | Wolverhampton, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Rudell the Jewellers is renowned as a jeweller of excellence and with the finest customer care in the Midlands, UK, boasting the most prestigious selection of jewellery…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Mireyamireyauk.com HQ: Clerkenwell, United KingdomReported employees: 11-50 | Clerkenwell, United Kingdom | 11-50 | Exact match | 19 contacts → |
“Mireya UK Ltd prides itself in offering integrated business solutions for diamond & diamond jewellery retailers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Edinburgh Assay Officeedinburghassayoffice.co.uk HQ: Edinburgh, United KingdomReported employees: 11-50 | Edinburgh, United Kingdom | 11-50 | Exact match | 18 contacts → |
“Protecting consumers, assuring quality, and building trust.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | KIMAIkimai.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 17 contacts → |
“Kimai is a fine jewelry brand creating delicate designs using only lab-grown diamonds & 18k recycled gold.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Origin Analyticaloriginanalytical.com HQ: Welshpool, United KingdomReported employees: 11-50 | Welshpool, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Origin Analytical has been established to provide research grade analytical data to industry in a cost effective manner with turn around times to suit the demands of modern…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Gemmology Rocksgemmologyrocks.com HQ: Maidstone, United KingdomReported employees: 1-10 | Maidstone, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Our aim is to bring gemmology to you.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | The World Diamond Museumfacetsofmankind.org HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“The World Diamond Museum is an international organization established to research, educate, and promote diamonds.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Monnickendam Diamondsmonnickendam.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Monnickendam Diamonds is one of the oldest and largest sellers of loose and certified diamonds in the UK.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Sunshine Exim LTDsunshineexim.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Sunshine Exim was established in 1989.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | 247 Diamonds Limitedcomparethediamond.com HQ: Salford Priors, United KingdomReported employees: 1-10 | Salford Priors, United Kingdom | 1-10 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | The Diamond Trustthediamondtrust.co.uk HQ: Berkhamsted, United KingdomReported employees: 11-50 | Berkhamsted, United Kingdom | 11-50 | Exact match | 3 contacts → |
“The Diamond Trust offers a variety of diamond jewellery beyond that which you will see in most stores.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Sant Enterprises Limitedsantenterprises.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | Agroisolab UKagroisolabs.com HQ: Malton, United KingdomReported employees: 1-10 | Malton, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Agroisolab UK have been experts in the use of isotope analysis for provenance testing, counter-fraud and authentication of organic produce at the commercial level for over a…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Susan Rumfitt Fine Jewellerysusanrumfitt.com HQ: Harrogate, United KingdomReported employees: 1-10 | Harrogate, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Susan Rumfitt is a well respected and knowledgeable specialist and lecturer on the history of jewellery and has been one of the specialists on the BBC's Antiques Roadshow for over…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Marcus Mccallum Limitedmarcusmccallum.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 | Merlin Lazer LTDmerlinlazer.com HQ: Royal Tunbridge Wells, United KingdomReported employees: 1-10 | Royal Tunbridge Wells, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Merlin Lazer first established itself as a world leader in the field of Glass measurement and identification, however as part of our continual expansion and in response to our…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 112 company matches
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Gemological laboratories: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
105 records in the displayed employee bands.
7 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 112 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Gemological laboratories by metro
Questions about this company list
What does Exact match mean for gemological laboratories?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many gemological laboratories did RevenueBase find based in the United Kingdom?
The saved snapshot records 112 matching company records, 941 tracked contacts and 295 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Gemological laboratories by geography
- Gemological laboratories based in Paris, France
- Gemological laboratories based in Mumbai, India
- Gemological laboratories based in Surat, India
- Gemological laboratories based in London, United Kingdom
- Gemological laboratories based in Los Angeles, United States
- Gemological laboratories based in New York, United States
- Gemological laboratories based in Australia
- Gemological laboratories based in Belgium
- Gemological laboratories based in Brazil
- Gemological laboratories based in Canada
- Gemological laboratories based in France
- Gemological laboratories based in Germany
Cite this list
RevenueBase Data Team. Top 25 gemological laboratories based in the United Kingdom. Snapshot: November 6, 2026. https://revenuebase.ai/companies/gemological-laboratories/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Gemological laboratories based in Paris, France
- Gemological laboratories based in Mumbai, India
- Gemological laboratories based in Surat, India
- Gemological laboratories based in London, United Kingdom
- Gemological laboratories based in Los Angeles, United States
- Gemological laboratories based in New York, United States